Abstract—A finite element simulation of the state of stress in the femur–condylar prosthesis biotechnical system is performed, and its mechanical behavior is analyzed. The metallic components of the endoprosthesis (implant) are made of a VT6 titanium alloy, and the plateau of the tibial component is made of ultrahigh-molecular-weight polyethylene. The stresses in the bone structures and the most severely loaded components of the endoprosthesis are calculated at a functional load of 3300 N. A high degree of similarity of the biomechanical behavior of the biotechnical system (with the endoprosthesis) to the behavior of a healthy femur has been established. The stresses and strains of all components of the biotechnical system are shown not to exceed their critical values. The calculation results made it possible to predict the operational capability and reliability of the endoprosthesis components under static and cyclic loads, the wear resistance of the mobility unit, and the reliability of the cement mantle.

摘要：对股骨髁假体生物技术系统的应力状态进行有限元模拟，并分析其力学行为。内置假体（植入物）的金属部件由VT6钛合金制成，胫骨部件的平台由超高分子量聚乙烯制成。骨骼结构和内置假体中负载最严重的部件中的应力是在 3300 N 的功能负载下计算的。生物技术系统（带有内置假体）的生物力学行为与健康股骨的行为高度相似已经建立。生物技术系统所有组件的应力和应变均未超过其临界值。计算结果可以预测内置假体组件在静态和循环载荷下的操作能力和可靠性、移动单元的耐磨性以及水泥罩的可靠性。